Owner's manual
26
Technical Data for the Alicat Portable Calibration Unit (PCU)
The following specications are for the standard conguration of the device. Please contact us or visit
www.alicatscientic.com for customization details, application notes, etc.
Basic Specication PCU Meters Description
Accuracy ± (0.4% of Reading ±0.2% of Full Scale) At calibration conditions after tare
Repeatability ± 0.2% Full Scale
Operating Range 1% to 100% Full Scale Measure and Control
Typical Response Time 10 Milliseconds (Adjustable)
Standard Conditions (STP) 25º C & 14.696PSIA Mass Reference Conditions
Operating Temperature −10 to + 50 º Celsius
Zero Shift 0.02% Full Scale / º Celsius / Atm
Span Shift 0.02% Full Scale / º Celsius / Atm
Humidity Range 0 to 100% Non – Condensing
Flow Rate 128% Measurable Full Scale
Maximum Pressure 145 PSIG
Input /Output Signal Standard RS-232 Serial & 0-5Vdc
Input / Output Secondary 0-5 Vdc; 0-10Vdc;4-20mA Pressure, Temperature or Flow
Warm-up Time < 1 Second
Wetted Materials
303 & 302 Stainless Steel, Viton®, Silicone RTV (Rubber), Glass Reinforced Nylon, Aluminum,
Silicon, Glass.
Standard Full Scale Flow Ranges
0.5SCCM 100SCCM 50SLPM
1SCCM 500SCCM 100SLPM
2SCCM 1SLPM 250SLPM
5SCCM 2SLPM 500SLPM
10SCCM 5SLPM 1000SLPM
20SCCM 10SLPM 1500SLPM
50SCCM 20SLPM
No charge for alternate full scale ranges to increase
accuracy (e.g. 2.5SLPM) or alternate units of measure (e.g.
133SCFH).
Full Scale range applies for all 30 gases and mixtures in the
calibration table.
Standard Pressure Drop Across the Device in PSID
Full Scale Flow
0.5SCCM to 1SCCM 1.0
2SCCM to 50SCCM, 1.0
100SCCM to 500SCCM 1.0
1SLPM 1.0
5SLPM 1.0
10SLPM 1.0
20SLPM 1.0
50SLPM 2.0
100SLPM 2.5
250SLPM 4.0
500SLPM 5.5
1000SLPM 6.0
1500SLPM 9.0
CCM CCH LPM LPH CFM CFH
CFH 0.0021 0.00003 2.1189 0.035 60.0 1.0
CFM 0.000035 0.0000005 0.035 0.00059 1.0 0.0166
LPH 0.06 0.001 60.0 1.0 1699.0 28.316
LPM 0.001 0.000017 1.0 0.0166 28.316 0.4719
CCH 60.0 1.0 60000.0 1000.0 1699011.0 28317.0
CCM 1.0 0.0167 1000.0 16.667 28317.0 471.947
Flow Conversion Table: